Electrical switch.



T. CLARK & I. VLASTO.

ELBGTRIGAL SWITCH. APPLIQ'ATION FILED DBo.14, 1907.

9 l 3, 8 1 O Patented Mar. 2, 1909. 5 SHEETS-SHEET l.

25 Fiyi.

T. CLARK & I. VLASTO.

ELECTRICAL SWITCH.

APPLICATION FILED M1044, 1907.

Patented Mar. 2, 1909.

5 SHEETS-SHEET 2.

W Tf1/5555 T. GLARK & I. VLSTO.

ELECTRICAL SWITCH.

APPLICATION FILED 11120.14, 1907. 913,810, Patented M3122, 1909.

5 SHEETS-SHEET 3.

T. CLARK a I. VLASTO.

ELECTRICAL SWITCH.

APPLICATION FILED DEG.14, 1907. 91 3,810. v Patented Mar. 2, 1909.

5 SHEETS-SHEET 4.

.. CLARK Sa VLASTG.

ELECTRICAL SWITCH.

APPLIOATION FILED DEO.14, 1907.

Patented Mar. 2, m09.

5 SHEETS-BREST 5l 4 .a W M. f1 V N TH OMA S CLA RK A N D 'PIAN Bc knownNutt We, VAN '/Liis'io, sui) ts o imid. residing; at Stockton county oticstci, iiifjimid, new and use. u1 1min-m Viiifnts in o1' Connectcdwith Eicctrics S toiles. of which tic foilowing is :i spocicstiou, L imsgs 3, fanti This imclitioii has i'cfci'cncc to electric ti c @miswhich come opposite i switches adapted to used as conti-@Hor in the faitposition foi' stm-ting purposes-sy motsis. or to `act bosses 2 srsmounted 'ro continuing' motor speeds and similar purpiiidc l, which hass poses; and it has among' ottici things, foi its .hows in Fig. 4,1501'C objects and etica-ts, to provide im tira-liefefi'lcir tight positi-Gn;and til 15 nicht of' resistance which gives m. me insuiatciliii'om tiicspinfiii blow-out sii contacts, thereby piot:\cti11- of insustioii 6,and Wssisis such contacts; to provide gciicisiij; mi s. l and midis,isiigciiifnt i nich is conwnisnt and moio ic ssistsiices consist omscimiiictti than starting swchcs st oletfti, bent on edge, 2

t, present cmpioysd, sind wouid. stand vsiy ssvoic ussgc; :iisotopiorid@ one Whcici'fi no live psrts cwossd, bcid boing; a-

ter-tight; and. further to pi'oidc im :wrang omite( cstwccu two o; niento? construction iiiyiifhich nii connections .sis 'oim ci 'fcsistsiicsthe heart from the iesistsnccs to the Contacts src is conducted to theoutside t? avoided. instal, tilt-Dy facilita-tino The invention hasfiuthsr icteiiice to heat; also g'ving an, addi mi overload andiio-voitxttc icicsscs connected when the coiis zur@ mounted ctw 'withstai'tiiig or controlling switches. tacts on the cyiiudef, of dis Theinvention Wii bc dcsciibcd with thc connection from the csistsfiics sidof the accompanying drziwi which tncts. iiiustrats it. i The spidi@ 41.is in thssc di'miligs, tipps? cowcif c? piste in'ssctioii of an cie-ctmse 'piste or bottom tsii section; fc i rfi showing the intsi'nsi'siisiigsm Fig. 5 is ar fifoiit cicvstion; sin. uis-1i ci" the carrierfor the 's 1@ l 4G mg the position oi the oiov Figi. 7 is a diswismmaticView iii Y switch appar Atus,

in s. contioiif r or stmt-ing' switch im' motors, and elect i ...iinstallations ci su misiottiturc. is.; @ous Oi' equivale-it nature, theiesis'tuncss src Air ducts "i5 sffc piovifed iii thc aangsd so as toprovide s maglie" tieid at the Contact bosses 2, so t at si? has ice allcontacts Whsic thc circuit is broken, so as ccs-s to the iii'tci'iot 0i'the Tesis-tance coiis l to biow out thc me formed by biesilig the am? bythese means coiivcctioii oi host Voin c circuit. and soprotecting thccontacts, and tiis inside of the coils is assisted. And tti Y. 'L05dispensing with separate coiis to accom iish bossss arc sis@coiistuctsd. os c@ 'iV si this.' l flhesc resistance coils are Wound stsi'- in Figs. 3'. an d 5;, so that the nt nstvs'y Tight :md isit hand,so to opposa Leave si; svcj ons). sind so po each other msgnsticaii togive :t tsv-e ventiis-tionn :V

tlic ip ostwssn s. canti( turcs ysis@ p'foififi-sd ip 1"@ ce" t',-

vy 'i scsd in 1 l are bound up against ashoulder or collar 16 at thebottom of the spindle 4, by a'nut 17 screwed on its upper end.

The parts which are to make contact with the contacts 2 consist of bentmetal wipers 20, these being carried by ileXiblc or spring strips 21from a main carrier bar or standard 22, xed to the upper and lowerplates l0, l l. This bar is insulated from the upper plate l0, and fromthe lovvermost wiper strip 2l by insulation 23, the part ol' the bar orframe carrying thislowermost strip being also insulated at its lower endfrom the bottom plate or base 11.

The carrier standard or bar 22 besides supportin the wipers 20, alsoelectrically connects t lem, so that when the coil cylinder is turned,and the contacts 2 of the same touch their respective wipers inrotating, the resistance coils are cutout in the same rotation. y

Of course, the gaps between the ends or the contact strips 3 will be sodisposed in series, in relation to each other, to give the consecutiveaction of the resistance coils required.

The resistance coils l as above stated, are wound alternately right andleft hand, so to oppose each other magnetically, to give a magneticfield in the air gap between the central cylinder, (comprising thecontacts` and coils) and an iron or. steel bar 5-covered with asbestosor the like-carried from the wiper carriers, placed in the iront ofsaine, as shown more particularly in Figs. el, 5, and

6. By these arrangements and provisions, a magnetic iield 1s provided atall contacts Where the circuit is broken, and the arfl formed bybreaking the circuit is blown ont, and the contacts rotected.

. The whole coi cylinder is rotated by a handle 25 fixed on the upperend of the spindle 4. l

In the diagram, 30 representsjthe main supply and return conductors, 3lthe motor armature, 32 the shunt coils, 33 the over-load release, and 34the novoltage release.

What is claimed is zl. In an electric starting and controlling switch, aspindle having a plurality of spaced contact stri s, a plurality olresistance coils, wherein eac alternate coil is wound in an oppositedirection to the other coils, connected to and arranged between the saidstrips; and means operating as an electric low out.

2. In an electric startin and controlling switch, a spindle having a purality oi spaced aplertures; a plurality oi resistance coils W ereineach alternate coll is wound in an opposite direction to the othercoils, connected to and arranged between the said strips g and meansoperating as an electric blow out.

3. in an electric starting and controlling switch, a spindle having aplurality ci' spaced contact strips having Ventilating spaces, aplurality ol alternately wound resistance coils having means forconducting the heat away from the coils, and connected to and mountedbetween the said strips and means operating as an electric blow out. J

4. ln an electric starting and 'controlling switch, a spindle having aplurality of spaced and ventilated contact strips, a plurality ofresistance coils disposed between the contact strips and connectedtherewith, each coil being composed ol alternate coils of wire and thinmetal rings, the coils between alternate strips boing wound in oppositedirections; and means operating as an electric blow out.

5. ln an electric starting and controlling l switch, a spindle having aplurality oi' alter- .nately arranged ventilated contact strips andresistance coils, adjacent members of the coils being wound in oppositedirections; and means l'or constituting a magnetic lield about thecontact strips capable ol' operating as an electric blow out.

6. in an electric' starting and controlling switch, a spindle having aplurality of alternately arranged ventilated contact strips andoppositely wound. adjacent resistance coils having means 'lor conductingthe heat away from the coils, and an electric blow out arrangement,comprising an insulated iron or steel b ar arranged. adjacently to thercsistance coils l'orconstituting magnetic field about the contactstrips.

'.7. An electric starting v.and controlling switch, comprising a spindlehaving a plurality oi alternately arranged ventilated con` tact stripsand resistance coils, the latter havingin'terposcd metal rin l'orconducting the heat away, while adj acont members are oppositely wound;an iron bar inclosed in an nsulating casing of asbestos, and arrangedadjacently to the resistance coils, and constituting in conjunction withthe said coils a magnetic iield which operates as an electric blow out,and a casing, comprising a metal cylinder mounted between end plates,hall' ol' such casing operating as a hinged door lor gaining access tothe parts of the switch.

In testimony whereol' we have signed our names to this specilication inthe presence of two subscribing witnesses.

THOMAS CLARK. IVAN ELAST() Witnesses:

SoMnRviLLn GooDALL, WALTER HARRISON.

